Triplicate vacuum and air trap.



R. E. DEWEY.

TRIPLICATE VACUUM AND AIR TRAP.

APPLICATION FILED MAR. 12. 1915.

1, 171 ,599. 4 Patented Feb. 15, 1916.

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l I I l 2d 75 19 /g ,2 m '1 imam R. E. DEWEY.

TRIPLICATE VACUUM AND AIR TRAP.

APPLICATION FILED MAR.12,1915.

1,171,599, Patented Feb. 15,1916.

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Qttozuegg THE COLUMBIA PLANOGRAPH c0.. WASHINGTON, D. c.

UNITED s ATEs PATENT nice.

RUEL E. nnwnryo'r GRAND RAPIDS, MICHIGAN.

TRIPLICATE vacuum nn Ara TRAP.

To all whom, it may concern:

Be it known that I, RUEL E. Dnwnx, a citizen of the United States ofAmerlca, re-

siding at. Grand Rapids, in the county of Kent and State ofMichigan,have invented certain new' and useful Improvements in Triplicate Vacuumand Air Traps; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as willenable'others skilled in the art to which it appertains to make and'usethe same. 7 V V This invention relates to a triplicate vacuum and airtrap adapted to be used with vapor heating systems.

It is a'primary object and purpose of the invention to provide a deviceof this character which may be applied to a vapor vacuum heating system,in use permitting the ready escape of air from the radiators andconnecting pipes of the system, and at the same time insuring againstthe escape of the heat carrying vapor, it isessential'that the vacuumproduced by the cooling shall not draw in air. My apparatus is'designedto attain all these ends and to work substantially. automatically,requiring practically no attention and being substantially proof againstgetting out of order.

The construction embodying my inven tion is disclosed in theaccompanying drawings, in which; I I

Figure 1 illustrates a heating system equipped with my invention. Fig. 2is a vertical sectional view taken through the air and vacuum valveportion of the device. Fig. 3 is a similar-view takenithrough the floatchamber; and Fig. 4L is a horizontal section on the line H of Fig. 3. iY Like reference characters refer to like parts throughout the severalviews of the .drawings.

Inthe heatingsystem shown, a "heater of Specification of Letters Patent.Patgntgd Feb, 15 Application me March 12, 1915. SeriaLNo. 14,035.

.member 9 and atmosphere.

any approved type such as, shown at 1. is' used to generate the heatcarrying vapor.

such as steam or water vapor which'is carriedthrough the'supply'mains 2,the excess over "and above that. required to supply the radiatorsand-the condensation that takes place in the mains 2 beingreturnedthrough the pipe 3 to the lower portion of the heater 1' as shown.Branches a extending-from the length of the mains 2- at any desiredpoints serve to conduct the heat carrying vapor to radiators .5, thereturn therefrom being through return. pipes 6 which also leadto thelower part of the heater, the usual check 'valve6 being interposedbetween the heater and the return pipes to insure against a How of hotwater from the heater in a backward direction through the return pipes.The construction thus described is common and well known in heatingsystems and is disclosed chiefly for the purpose of illustrating the useand operation ofmy inven tion in connection therewith.

-In.the mains 2 a short distance fromthe heater .1 a union 7 may belocated from which leads a pipe 8 of comparatively small diameter, itsendthreading into the lower.

member 9 'ofan air and vacuum valve control WhlClllS comprisedof the twocurved members 9 and 10 having lnterposed between them a diaphragmll,preferably of rubber, though any suitable. flexible mate rial may beused. The inclosure formed by diaphragm 11 .is steam tight but member 10hasa plurality oi openings l0 whereby the pressure on the upper side ofthe diaphragm is that of the outside A short connecting pipe-12 leadsfrom. and iscarried by the upper memconstruction is locatedin the casingandf adapted to close the passageway therein ducting pipe l6is connectedto thevalve' casing adapted to carry the air, as willbe hereinafter exlained, from the heating system to'the casing 13. The valve 14 isconnected by a rod 17 with diaphragm 11, any

suitable form of permanent connection being used. '.'It will-be apparentthat when the pressure of vapor in the mains 2 rises slightly above thatof ordinary'atmospheric re s u e t re 'en ns th ou h P p 8 95 .ber 10threading at its upper end-into the .valve casing 13. A valve 14 of theusual presses against 'a ragin 11 and serves to a T. above its seat sothat sage through 1 ipe 1 S, it at any 5 below lve 14 into close co lflow By lea a ge diam eter of all slight variaeve below atmos- Hmu redto operate the ly against its seat. "nion 18 is o...eaded end 19 floatchamber is tions in pheric p valve av 7'3 in the shown to of a baseconnected. the housing side has a s a suitable c tofore descr to permitthe ii reti :1 piece G to t 25 hou g a float a shell-111 which is placedany adapted to expand re? celow that of st lower extension c .r I

tion 20 of the base 90 and at its upper end is pro .ed with a valvewhich is normally located sl htly below a valve seat 26 formed at thelower end of the passageway through the projection A tube 27 is atchamber, its upper end to the top thereof while its W Hes into theportion 20*, the I o the float being of a forma- ,c Al

tion, .c as shown in he operation of the is soon a passage of the tuconstruction shown as a heat carrying .ed and introduced he pressurethereof bee than the outside pres- .-ve A is raised circulates any thepipes or forced ahead 1 the mher 21 and the tv "rally through the afterthe air has bee.- ots to pass'through contained within con sure oftlabove its seat. air in t mains of nds the seat '26 closing the also iffrom any cause be introduced into the '23 is elevated and the sed byvalve 25 before any The apparatus therefore escape of air from theserves as an effectual y ein or water or vapor. Wlnle at escape ofsufliciently to press the the heater is supplying a heating fluid to thesystem the pressure in the radiators and? is above that of the outsideatmostime the float chamber 21 it readily drains oh, the pipe 27permitting an equalization of pressure above and below the Watercontained in the chamber as will be readily understood.

The construction thus described consists of few parts isveryeficient inpractical operation. system is expelled very rapidly with no backpressure and none of the annoyance ordi: narily system will be observed.

Changes in minor-detail may be resorted to without departing from theinvention a 1 woich is defined in the appended claims and llmodifications falllng within the scope of ccnded wi hin my invention.

I c].aim:

1. In a device of the character described,

a valve casing, a valve located therein, an outlet to the casing, a rodconnected to the valve extending downwardly therefrom, a flexiblediaphragm secured to the lower endof the rod, a support for thediaphragm con-:

nected with and positioned below the valve casing, a member in saidsupport forming with the diaphragm a tight inclosure, an inlet pipe tothe. inclosure, pipe leading into the valve casing, a float chamberoined with the inlet pipe, a float containing-a. dilating fluid, a valveon the float, and a valve a short distance above the valve formed at theentrance of the passageway from the chamberzt-o the float, substantiallyas described.

2. In adevice of the character described, a valve casing, inlet andoutlet pipes con.- nected thereto, a valve in the casing, a memberconnected to the casing containing a tight inclosure having a flexibleside, an inlet pipe leading into the inclosure, a rod connecting thevalve and flexible side,- a

float chamber connected with the inlet pipe to the valve casing with anoutlet passage caused by the presence of air inthe said'claims are to beconsidered as compre-.

By its use air from a heating.

In a device of the character described, 1

a valve casing, inlet and outletpipes con: nected thereto, a valve inthe cas1'ng,-an

inclosure having a flexible side, a pipe leading into the inclosure,connections between the valve and the flexible side of the inclosurewhereby the valve moves with said side, a chamber connected with theinlet pipe with a passage from the chamber to the valve casing normallyopen, and a thermostatic device within the chamber having means to closethe passage upon rise of the temperature in the chamber above apredetermined degree.

4. In a device of the character described, a valve casing, an inlet pipeconnected thereto, a valve in the casing, an inclosure having a flexibleside secured to the casing, a pipe leading into the inclosure, a rodconnecting the valve and flexible side of the inclosure, a float chamberconnected with the inlet pipe with a passage from the chamber to thevalve casing normally open, and

a combined float and thermostatic regulator having means to close thepassage either by elevation of the float on entrance of water into thefloat chamber or by expansion of the float on entrance of vapor having atemperature above a predetermined degree.

5. In a vapor heating system a supply main to conduct heat carryingvapor to radiators in the system, a return main to conduct thecondensation, vapor and air from the radiators, a device including afloat chamber connected to the return main, a valve casing containing avalve, connections between the valve casing and float chamber providinga passageway from the return main through the floatchamber to the valvecasing, and means in the float chamber permitting the free passage ofair through the float chamber but acting to close the passage therefromon attempted passage of water or heat carrying vapor, substantially asdescribed' (3. In a vapor heating system, a supply main to conduct heatcarrying vapor to radiators in the system, a return main to conductcondensation, vapor and air from the radiators, a valve casing, a valvetherein, an inclosure having a flexible side, a pipe leading from thesupply main. intothe inclosure, a rod connected at its ends to the valveand flexible side, a chamber secured to the return main, connectionsbetween the chamber and valve casing whereby a passage normally open isprovided from the return main to the valve casing, and a device in thefloathaving means to close the passage on entrance of water or heatcarrying vapor into the chamber but inoperative on entrance of airtherein. V

-7.' In a vapor heating system, supply and return mains, means to expelair from the system including a valve, means to place the valve inopened or closed positions through pressure from the supply mains oratm0s-' pheric pressure as the pressure in the supply main rises aboveor falls below atmospheric pressure, repectively, a conduit in which thevalve is located connected with the return main, and means interposed inthe conduit permitting the free passage of air from the return main butclosing the conduit againstthe passage of water or heat carrying vapor,substantially as described.

8. In combination, a valve casing having an outlet, a valve therein, aninclosure having a flexible side,v a pipe'leading from the inclosureadapted to connect with the supply main in a vapor heating system, a rodconnected at its ends to the valve and the flexible side of theinclosure, a chamber adapted to be connected to the return main of thevapor heating system, connections between the chamber and valve casingforming a passageway therebetween, and a device in the chamberhavingmeans to close the passageway between the chamber and valve casing onentrance of water or heat carrying vapor into the chamber butinoperative on entrance of air therein.

In testimony whereof I aflix my signature in presence of two witnesses.

V RUEL E. DEWEY; Witnesses: r

FRANK E. LIVERANCE, J12, H. H. YARRINGTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

